Furnace.



V. F. LSSOE.

PURNAGE.

APPLIOATION FILED JAN. 3, 190B.

915,682. Patented Mar. 16, 1909.

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WIT/VESSES;

INVENTO? ATTORNEY nu: mmms PETER: cq'wAsmnoroN, mc.

V. F. LSSOE.

Patented Mar. 16, 1909.

nis NoRRls PETERS co.: WASHINGTON. D. c.

` V. P. LilissoB.A

FURNAGE.

APPLIUATION FILED IAN. 3, 1908.

v 915,682. Y Y Patented Mar.16, 1909.

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W Mw# OFFICE.

VALDEMAR F. LSSOE, OF BROOKLYN, NEW YORK.

FURNACE Specification of Letters Fatent.

Patented March 16, 1909.

Application filed January 3, 1908. Serial No. 409,208.

lo all whom it may concern:

Be it known that l, VALDEMAR F. LssoE,

naces 22 are represented with the threaded shoulders 50, 51 thatrespectively engage a citizen of the United States, and a resident ol'the borough of Brooklyn, inthe county ol i der being somewhat larger 1ndiameter than Kings and State of New Yoik,`have invented certain new anduseful Improvements in Furnaces, of which the following is aspecifiration.

This invention relates to furnaces.

The object of the invention is the production of a tubular furnace whichcan be easily con nected to the heads of the drum of a boiler, and whichis specially accessible for re- )airs tubular furnace that is inthreaded engagement with said heads, and which has a throatconnectionbetween ,it and a bonnet.

In the drawings Figure 1 represents a diagrammatic cross-section of avessel with a battery of boilers therein exemplifying the invention,Fig. 2 shows a longitudinal section of a boiler with the invention, Fig.3 is a partial left hand end view of Fig. 2 with a portion thereofhaving the front and breeching removed, Fig. 4 shows a section of Fig. 2on the line 4, 4, Fig. 5 is a partial enlarged longitudinal section ofone of the tubular furnaces of the boiler with its immediateappurtenances, and Fig. 6 represents a modified tubular furnace.

The boiler with which the invention is shown is represented toessentially comprise the upper or steam and water drum 20, the lower orwater drum 21 with the tubular furnaces 22, the central circulatingconnecting pipes 23, curved side circulating connecting ipes 24,combustion chamber 25, breeching 26 and stack 27. In Fig. 1 theinvention is shown with a battery of boilers in a vessel 30.

The steam and water drum 20 has connected with its cylindrical shellrespectively the front and rear tube sheets 35, 36, to which latter areconnected the lire tubes 37, and the stay bolts 38. formed in the upperdrum, as well as perforations 40 for the steam dome 41 The breeching 26is represented with the doors 42 covering openings therein.

The lower drum 21 has connected with its cylindrical shell respectivelythe front and rear heads 45, 46. The front head is somewhat distant fromits accompanying end of the said shell, and a bonnet or boiler front 47is secured to the said front end of the shell inclosing said front head.The fur-` A hand hole 39 with cover is f lts organization ischaracterized by a threaded openings in the heads 45, 46, the formeropening with its accompanying shoulthe latter, so that the tubularfurnace can be easily secured in place. A nut 52 also engages theshoulder kand packing 53 is located between the accompanying faces ofsaid nut and the head 45. The nut when secured up against the packingand the latter bearing between it and the head 45, holds the front endof the furnace flue 22 tightly in lace. At the connection between therear end of each furnace 22 and the head 46, is inserted in said furnaceand calked over the end 5 thereof the ferrule 54.,` Throat connections55 extend from the bonnet 47 and enter each of the said furnaces 22.

The furnaces shown in the drawings are designed for burning oil, and thebonnet 47 has openings 56 with the damper doors 57 for oil burningapparatus. Peep holes 58 with the hinged doors 59 are also provided forsaid furnaces.

To each of the drums 20, 21 are fastened the accompanying manifolds 65,each of which are tapped for the central circulating pipes 23. Thecurved side circulating pipes 24 also connect the said'drums 20 and 21,

while the side cover plates 67 inclose the said circulating pipes 23, 24with the drums of the boiler.

To the rear of the drums 20 and 21 is located the central shell 70 withthe front end 71 and rear end 72 and within said shell are located thelinings 7 3, 74, 75 that constitute the combustion chamber 25. A coverl7 6 over a manhole leads into said combustion chamber. Front and rearcross plates 77, 7 S extend between the cover plates 67 and theaccompanying faces of the .drums 20, 21, and brick lining 79 bearsagainst the latter plate. the said lower drum 21.

The operation of the boiler is evident from the drawings and foregoingdescription.

In Fig. 6 are represented thc front and rear tube heads 100, 101 of alower drum of the invention, which are flanged for the tubular furnace102. n

The tubular furnaces may contain `grates for burning fuel, instead ofhaving oil burners located therein.

Having described my invention I claim:

1. Theucombination of a drum, front and Cradles -80 support rear headsfor the drum, a tubular. furnaceconnectingl the heads, thefrontheadfsonieeV What distant from its accompanying endl of the drum, abonnet secured to the front endl of the druln inclosing the front head,a throat connection extending from-tine, bon; net into the furnace,threaded shoulders on the furnace in engagement' With threaded openingsin the front and rear heads, and a nut on one` of said shoulders to bearagainst packing located between it and theacconk panyingg head of vthedrum.

2. The coinbinationof acylindrical drum, front and rearheadslconneeted-tothe druin and having. a threaded opening'. in* each,tubular furnaces having threaded sho uiders and in engagement with thethreaded openfV ingsin-said heads, a nut on the shoulder of i each;furnace adjacent; to the outer surface of the front head andl bearingagainst a 2 packing adjacent to said front head, a bonnet with peepholes extending from the front ends of the-V drum and inciosingtherflollt heads, damper door over openings in said bonnet for saidfurnaces, a throat connection 2 for each furnace extending` from thebonnet to each of said furnaces.

Signed at: the borough of Manhattan in the 'county of New York and Stateof New York this 30th day of December A D. 1907:'l

VALDEMAR' F. LASSOE. vWitnesses.:

W. E.A WARNER,- WM. P. FRANOL.

